Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7887938 | Coating composition | William E. Fristad, Jengi-Li Liang | 2011-02-15 |
| 7332021 | Coating composition | William E. Fristad, Jeng-Li Liang | 2008-02-19 |
| 5728235 | Moderate temperature manganese phosphate conversion coating composition and process | Mervet S. Boulos, Michael Petschel | 1998-03-17 |
| 5595611 | Moderate temperature manganese phosphate conversion coating composition and process | Mervet S. Boulos, Michael Petschel | 1997-01-21 |
| D325798 | Rack for disposable trash bag | Gregory K. Pranski | 1992-04-28 |